TRS Group, Inc. (TRS) subcontracted to TN & Associates to provide an Electrical Resistance Heating (ERH) remediation of trichloroethene (TCE) in soil and groundwater at the Pemaco Superfund Site located in Maywood, California. This is the first EPA Record of Decision (ROD) in California that includes ERH as the selected technology for the treatment of a deep TCE source area. The remedial goal at this site was to remove as much TCE mass in groundwater as possible.

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ABSTRACT
BOS 100® was injected adjacent to and beneath a stream using a direct push angle drilling technique to successfully create a PRB and limit PCE flux from the upgradient source area into the stream.
CHALLENGES
The Superfund site is a former textiles facility where tetrachloroethylene (PCE) was used in dry-cleaning operations. Approximately one-half mile downgradient of the source PCE (100-300 μg/L PCE) was discharging into a stream through the saprolitic formation (weathered gneiss and schist)....

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